Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Revert "cpufreq: Use cpufreq_policy_list for iterating over policies"

Browse source 
Revert commit eb60852 (cpufreq: Use cpufreq_policy_list for iterating
over policies), because it breaks system suspend/resume on multiple
machines.

It either causes resume to block indefinitely or causes the BUG_ON()
in lock_policy_rwsem_##mode() to trigger on sysfs accesses to cpufreq
attributes.

Conflicts:
	drivers/cpufreq/cpufreq.c
This commit is contained in:
Rafael J. Wysocki 2013-08-18 15:35:59 +02:00
parent 0e25246fb3
commit 878f6e074e
1 changed files with 5 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/cpufreq/cpufreq.c
View file

@ -969,8 +969,8 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
struct cpufreq_policy *policy;
unsigned long flags;
#ifdef CONFIG_HOTPLUG_CPU
struct cpufreq_policy *tpolicy;
struct cpufreq_governor *gov;
int sibling;
#endif
if (cpu_is_offline(cpu))
@ -993,10 +993,11 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
#ifdef CONFIG_HOTPLUG_CPU
/* Check if this cpu was hot-unplugged earlier and has siblings */
read_lock_irqsave(&cpufreq_driver_lock, flags);
list_for_each_entry(tpolicy, &cpufreq_policy_list, policy_list) {
if (cpumask_test_cpu(cpu, tpolicy->related_cpus)) {
for_each_online_cpu(sibling) {
struct cpufreq_policy *cp = per_cpu(cpufreq_cpu_data, sibling);
if (cp && cpumask_test_cpu(cpu, cp->related_cpus)) {
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
ret = cpufreq_add_policy_cpu(tpolicy, cpu, dev, frozen);
ret = cpufreq_add_policy_cpu(cp, cpu, dev, frozen);
up_read(&cpufreq_rwsem);
return ret;
}